Lindsay Lohan: Pregnant, or April Fools' Joke?

"Its official. Pregnant…" Lindsay Lohan wrote on Twitter overnight, although the timing of the announcement was certainly suspicious.

If it was an April Fools' joke, it was a late one, posted after midnight ET. Then again, lateness is a Lohan specialty – she was an hour tardy to her crucial court hearing last month, and also missed her flight back to the U.S. from Brazil on Monday.

If it's not a joke and she is indeed expecting, the actress, 26, will be in for an unusual first few months of pregnancy.

She's been ordered to serve 90 days in a rehab center under lock and key – and undergo psychotherapy and perform community service – after pleading no contest to reckless driving and lying to police last June, when she crashed her Porsche.